Antishimmying device



Dec. 3, 1929. w. MQLLER 1,738,147l

ANTISHIMMYING DEVICE Filed D60. 5, 1927 2f mmf@ Patented Dec. 3. 1929 UNlTED STATES PATENT OFFICE WILHELM MOLLER, or UPPER DARBY, PnNnsYLvaNIA, AssIGNoza To FRONT WHEEL coNTRoL, ING., F PHILADELPHIA, PENNSYLVANIA, A COREQRATION 0F DELA- WARE ANTISIIIMMYNG DEVICE Application lcd December 3, 1927. Serial No. 237,537,

rl`he present invention relates to an iinproved anti-shimmying attachment ior the :trent wheels of a motor vehicle.

Owing to the looseness ol play of the various connections in the steering mechanism ot a motor vehicle the trent wheels vibrate laterally, due to passing over rough road beds, therefore it is the purpose of the present invention to relieve and prevent this lateral vibration or shiinmying of the front wheels.

ln previous application which has matured into Patent No. 1,656,566, dated January 17, 1928, there is disclosed a contrivance for preventing lateral vibration or shimmv ing et the 'liront wheels, said construction being adapted particularlj,7 -l'or use in connection with Ford automobiles, but this construction is not necessarily applicable to heavy machines, where the steering mechanisin and the associated parts are unlike those of the F ord vehicle, therefore another purpose ot the invention is to provide an anti-shin'imying device especiall7 adapted tor heavy and large cars, and wherein one connection ot the device is made with the front az-lo, and the other connection is made with the cross connecting rod uniting the arms of the knuckle joints between the aide and the front wheels, said connections with the i'ront axle including friction means operating to relieve the shiinn'iying or lateral vibration ot the front wheels, and especially in passing over rough road beds.

A, 'further purpose is to provide an improved connection between the anti-shiminying device and the cross connecting rod, so as to take care ot any lateral play ot' a rod :forming an element of the anti-shi1nrnying device, thereby enabling the device to operate with accuracy and precision, and enable the operator te actuate the steering mechanism as though the steering mechanism ci' the automobile was free of such shimrnying attachment.

lt is to be understood that the particulars herein given are in no way limitive, and that while still keeping within the scope oi the in vention, any tesired modiiication oi details and proportions may be made in the construction of the appliance according to circum` stances.

'lhe invention comprises further features and combination of parts to be hereinafter set forth, shown in the drawings and claimed.

in the drawings:

Figure l-is a planview oi the front construc tion of an automobile axle, showing the anti-shiinmying attachment as applied.

Figure Q-is an enlarged plan view of one end ot the attachment where it connects with the axle.

Figure S-is a Sectional view on line 3-3 ,t Figure 2.

Figure Li--is a sectional view on line 1-4 ci Figure 1, showing the mounting and con nection ot the rod of the anti-shimmying device with the cross connecting rod between the arms et the knuckle joint-s, illustrating the looseness et plav 'forthe rod.

`Figure Iiiis a cross sectional view on line -5 of Figure 1.

Referring to the drawings, 1 identities the aide of a motor vehicle, the one carrying the front wheels, and 2 denotes a bracket plate, which is fastened at 3 to the axle by means of one of the staples, which iastens the springs to the axle.

This bracket plate has an off-set extension 4: which is interposed between the friction discs 5. The friction ,discs are arranged on opposite 'faces ot the extensionand under the circularends 6 of the two links 7.

The other ends of the links 7 terminate in circular plates 8 which engage on theremote faces of a pair of friction discs 9, between which is interpos .d a circular head 10, a re` duced extension ot which has its end ,tit-ting into a slot 152 in the end of a tubular rod 13, there being a welded or other suitable joint at this point.

Passing centrally through the circular ends of the bracket plate and through the friction discs 5 and the circular ends or heads 6 of the links 7 is bolt 111 having a nut` 15, and arranged under the head and the nut oi said bolt are washers a having spring arms 16. The washers are centrally dished, so that the ends of the arms 16 will bear on the circular ends of the links 7 and thereby create friction with the circular discs. A bolt 17 passes centrally through the circular ends 8 of the links 7 and through the discs 9 and throughv the head 10, said bolt having a nut 18. Bearing upon the circular heads 8 are the spring arms 19 of the dished 'washers 20, which are arranged under the head and nut of the bolt 17, thereby creating friction of the circular ends or heads 8 with the circular head 10 and the v 10 friction washers 20, which are interposed between the heads or circular ends 8 and the circularhead 10, thereby creating sulicient friction, which together with the friction in the jointl with the bracket plate operates to relieve or prevent shimmying or lateral vibration with the front wheels. It is possible to adjust the `nuts on the bolts to increase or decrease the friction on the arms of the disc y Washers with the adjoining parts of the joints. zo The other end 'of the rod (which connects with the arm of the circular head 10) has threaded therein a bolt 21, which passes looselythrough an opening 22 formed in a boss 23 carriedby one of the parts of a two part 25 clamp 24.V This two part clamp 24 clamps with the cross connecting rod, Which connects the lateral armsv26 of the knuckle joints between the front axle and the front wheels. Bolts 27 securely connect the two parts of 30 the clamp and thereby secure the clamp to the cross connecting rod.` Arranged on opposite sides of the boss and in surrounding Vrelation to the bolt are springs 28, one spring being between the head'29 of the bolt and the boss and the other being between a nut 3() and the boss, the adjustment of the nut acting to regulate the tension of the springs. It is to be noted that the tubular rod has a v. looseness of play in the opening formed in vw the boss so as to permit of any lateral play of the tubular rod.

The invention having been set forth, what is claimed is:

' The combination with the front axle of a .51y motor vehicle, of a bracket connected to the front axle, links connected to the bracket including friction means, an element connected to the links Vhaving friction means vwith devices for increasing and decreasing the friction of both. friction means, a clamp carried by a cross connecting rod which operatively connects the front wheels of a vehicle, said clamp being adjustable and i provided with a depending boss having an opening, a bolt passing through the opening of the boss and adjustably threaded into one end of said element, means for locking the Vbolt in position, and resilient means on each side of the boss and surrounding the bolt, n0 whereby the lateral vibrations of the front wheels may be absorbed.

In testimony whereof he afHXes his signature.

u `'l f WILHELM MOLLER. 

